Work RAM

WRAM (Work RAM) serves as the SNES' main memory.

Even though WRAM has both Address Bus A and Address Bus B connected to it, the chip can only pay attention to one at a time, so WRAM-to-WRAM DMA isn't possible.

WRAM is left intact by the Reset_Button. [2]

The WRAM chip is straddling regions C1 and D1 in the jwdonal schematic

References

• [1] https://problemkaputt.de/fullsnes.htm#snesmemoryworkramaccess
• [2] https://problemkaputt.de/fullsnes.htm#snescontrollersotherinputs